I lived in Coos Bay for 5 years and found some interesting rock and fossils. If you want to dig up fossil bivalves or find chunks of petrified wood, give me an email.I can send you right to the spots. I wouldn't bother with panning on Gold beach it has been hit very hard by dredgers for 70 years. Whiskey run still has some gold left but it takes a dredge to work the massive overburden of moving sand, and what you find is mostly trace or a small bottle of grain sized nuggets. I like to head out during any of the winter storms because the sand goes out to sea and the wrecks surface. There is a wrecked steel ship on the sand beach just NOrth of North Bend 1/4 mile North of the tourist parking area in the Dunes
park, nothing to find from that wreck but it shows the history of the area. Have fun, and check out the local museums for old photo history of the area it does pay off.